Alicia Keys held a protest in New York City on Tuesday to raise awareness about the 200-plus Nigerian schoolgirls who were kidnapped by Boko Haram militants in April.

Tuesday marked six months since the girls were abducted. Keys kicked off a protest with 30 others at the consulate general of Nigeria, holding signs that read “We Are Here” and “Safe Schools Now!”

They chanted “Bring back our girls” and “When do we want them? Now! Now! Alive!” as New Yorkers walked up the street during lunch hour, while others stopped to capture photos and video.

Keys, who is pregnant, said in an interview that she felt touched to take action because she is a mother.